The trail for Vice-President Kamala Harris to safe the Democratic presidential nomination is clearing.

Which will find yourself being the simple half. Essentially the most formidable problem – defeating Republican nominee Donald Trump in November – continues to be to come back. Her elevation to the highest of ticket would convey new strengths for the Democrats, however it additionally exposes weaknesses that had been much less of a priority with Mr Biden.

In response to latest polls, Ms Harris trails the previous president barely – a roughly related place to the one Mr Biden discovered himself in earlier than his historic announcement. However there could also be extra room for these numbers to shift as we transfer from a hypothetical matchup to a really actual one.

For not less than a second, Democrats have a jolt of power after greater than three weeks of intense hand-wringing over the president’s health and skill to maintain his marketing campaign.

All of Ms Harris’s main potential rivals for the nomination have endorsed her, as has former Speaker of the Home Nancy Pelosi – who stays one of the influential gamers in Democratic politics.

That is, nonetheless, shaping as much as be a decent race in November – a situation that displays deep partisan trenches in American politics and the distaste many citizens have for Trump as a candidate.

The vice-president’s main problem – and alternative – can be to capitalise on this Trump aversion, entice centrist voters in key swing states and energise the Democratic base, which was prior to now few weeks swinging in direction of despair, to match the keenness many on the correct maintain for the previous president.

This renewed sense of Democratic presidential enthusiasm comes with a greenback signal connected. In response to the Harris marketing campaign, the vice-president raised greater than $80m (£62m) in new donations within the 24 hours since Mr Biden’s announcement – the most important one-day whole of any candidate this election cycle. That, together with the practically $100m she inherits from the Biden-Harris fundraising coffers, offers her a agency monetary footing for the marketing campaign to come back.

Ms Harris, if she turns into the nominee, additionally defuses one of the efficient assaults the Republicans have levelled in opposition to their opponent: his age.

For months, the Trump marketing campaign has been pounding Mr Biden for being feeble and simply confused – characterisations that had been bolstered for a lot of Individuals after the president’s halting debate efficiency 4 weeks in the past.

The vice-president, at age 59, can be a extra energetic campaigner and in a position to make a extra coherent case for her celebration. She may additionally flip the 78-year-old Trump’s age in opposition to him, as he would turn out to be the oldest individual ever elected president.

Ms Harris can also be capable to shore up assist from black voters, who polls point out had been drifting away from Mr Biden in latest months. If she will be able to mix that with extra backing from different minorities and youthful voters – Barack Obama’s profitable coalition from 2008 and 2012 – it may assist her acquire floor in opposition to Trump within the handful of swing states that may determine this yr’s election.

Her background as a prosecutor may additionally burnish tough-on-crime credentials. Whereas her law-enforcement resume was a legal responsibility when she ran for the Democratic presidential nomination in 2019 – and led to derisive “Kamala is a cop” assaults from the left – it may assist her in a marketing campaign in opposition to Trump.

The vice-president has additionally been the administration’s level individual on abortion, which has confirmed to be one of the potent points for motivating the Democratic base in latest elections. Mr Biden, against this, generally had been a reluctant advocate on the problem, hampered by a previous file of supporting some limits on the process.

“I feel she reminds suburban ladies throughout the nation, notably in these battleground states, of what is at stake with reproductive rights,” former New York congressman Steve Israel, who headed the Democratic Congressional Marketing campaign Committee, instructed the BBC’s Americast podcast.

“We have now established a basic reset within the marketing campaign.”

For all Harris’s potential strengths, there’s a motive why some Democrats had been initially reluctant to push Mr Biden to step apart, provided that his working mate could be the clear successor.

Regardless of producing Democratic enthusiasm as regards to abortion, Ms Harris’s file as vice-president has been combined. Early within the administration, she was set the duty of addressing the basis causes of the migration disaster on the US-Mexico border. Quite a lot of missteps and misstatements – together with a ham-handed June 2021 interview with NBC Information presenter Lester Holt – broken her standing and opened her to conservative assaults.

Republicans are already condemning her because the president’s “border czar”, making an attempt to make her the face of what public opinion polls have discovered is the Biden administration’s unpopular immigration insurance policies.

“Immigration is a gentle spot for Democrats in these battleground areas,” Mr Israel stated. “It is a very salient difficulty for voters residing in these suburbs, pretty or unfairly. They consider that our immigration system shouldn’t be managed strongly sufficient.”

The Trump marketing campaign can even attempt to flip the vice-president’s prosecutorial background in opposition to her – each by highlighting the previous president’s file of enacting prison justice reform and by attacking her previous prosecutorial and parole selections.

One other Harris vulnerability is her chequered observe file as a candidate. In her 2016 Senate bid, she confronted solely token opposition from Republicans in deeply Democratic California.

Her one solo run for nationwide workplace – a bid for the 2020 Democratic presidential nomination – led to ruins. Whereas she surged early, a mixture of fumbled interviews, an absence of clearly outlined imaginative and prescient and a poorly managed marketing campaign led her to drop out earlier than even the earliest main contests.

Maybe the most important problem for Ms Harris is that, not like the president, she shouldn’t be the incumbent. Whereas she may need the chance to distance herself from a number of the extra unpopular components of Mr Biden’s file, she additionally doesn’t have the posh of being a identified amount for voters.

Anticipate a livid effort by Republicans to color Ms Harris as too untested and too dangerous to be president. In impact, Trump now has a better declare to being the one confirmed commodity.

The vice-president has an opportunity, within the days forward, to make a brand new first impression with the American public. If she stumbles out of the gate, it may open the door to an prolonged energy wrestle that stretches into the Democrat’s nationwide conference in late August. They may find yourself with the celebration uniting behind a special candidate – or tearing itself aside.

Because the previous 4 weeks have proven, fortunes within the White Home race can shift shortly and completely. Ms Harris has punched her ticket to the most important stage in American politics – now she has to indicate she will be able to compete.